ID19b dash clock battery
  • Register
  • Help
Results 1 to 7 of 7
  1. #1
    Tadpole
    Join Date
    Dec 2016
    Location
    Dun Laoghaire, Ireland
    Posts
    4

    Default ID19b dash clock battery

    Hi...I have an isolator on the main battery - so is there any problem wiring the dash clock to a small 12-volt battery?

    Advertisement

  2. #2
    Fellow Frogger!
    Join Date
    Apr 2016
    Location
    Bedford, UK
    Posts
    628

    Default

    No.Other than that you'll need to keep changing the battery.
    1968 DS21bvh Pallas in Gris Palladium

    Restoration blog: https://ds-restoration.blogspot.co.uk

  3. #3
    Fellow Frogger! badabec's Avatar
    Join Date
    Feb 2012
    Location
    Ongar / England
    Posts
    795

    Default

    Hello, you can bridge the isolator with a fused wire. If you use a small amperage fuse, say 5 amp or less, the clock will run from the car battery. If someone tries to start it, the fuse will blow.

    Like this
    https://www.ebay.co.uk/itm/Discarnec...EAAMXQ~6VQ5BPS

    Easy to knock one up with a small fuse holder and fuse, a couple of ring terminals and a bit of wire.

  4. #4
    Fellow Frogger
    Join Date
    Jan 2004
    Location
    Sydney
    Posts
    9,488

    Default

    Should be OK as long as there are no other parasitic loads to run the battery flat. You could add the clock feed wires between he battery terminals and isolator instead to power the clock but eliminate any other loads.

    1960's Jaguar 420 and G had a battery dash clock, but I can't recall if it was 12V or something lower. I can't recall how long that lasted, but the clock will let you know. You will probably need to adjust the clock speed if the small battery's voltage differs to the starting battery voltage, which is only nominally 12V.

  5. #5
    Fellow Frogger!
    Join Date
    Apr 2016
    Location
    Bedford, UK
    Posts
    628

    Default

    Quote Originally Posted by badabec View Post
    Hello, you can bridge the isolator with a fused wire. If you use a small amperage fuse, say 5 amp or less, the clock will run from the car battery. If someone tries to start it, the fuse will blow.

    Like this
    https://www.ebay.co.uk/itm/Discarnec...EAAMXQ~6VQ5BPS

    Easy to knock one up with a small fuse holder and fuse, a couple of ring terminals and a bit of wire.

    I read the description on Fleabay: what's the benefit of the bridged fuse to ancillaries blowing if someone tries to steal the car? Is it just a 'tell"? If so, I'd have thought the smashed side window and screwdriver jammed in the key hole would be enough of a clue At least, with the clock stopping, you'd know what time they tried to steal it!
    1968 DS21bvh Pallas in Gris Palladium

    Restoration blog: https://ds-restoration.blogspot.co.uk

  6. #6
    Fellow Frogger! badabec's Avatar
    Join Date
    Feb 2012
    Location
    Ongar / England
    Posts
    795

    Default

    They are worthwhile if the radio is coded and to keep any internal alarm batteries topped up.
    I would just reset the clock each time.

    Sent from my SM-J510FN using aussiefrogs mobile app

  7. #7
    Tadpole
    Join Date
    Dec 2016
    Location
    Dun Laoghaire, Ireland
    Posts
    4

    Default

    Many thanks, gentlemen for the advice. I'll sort it.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •